Photos: 5 things to know Saturday at the Kentucky Derby

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In this April 27, 2013 image provided by Churchill Downs, Kentucky Derby hopeful Mylute, under Rosie Napravnik, works out at Churchill Downs in Louisville, Ky. Napravnik tries to become the first female jockey to win the Kentucky Derby, a year after her ninth-place run here made her the highest female finisher. (AP Photo/Churchill Downs, Reed Palmer)